METHOD FOR MANUFACTURING SEALING DEVICE, AND SEALING DEVICE

• Main Authors: MORIO AKIRA, SHOJIMA DAIHACHI, SATO HIROAKI
• Format: Patent
• Language: English; Korean
• Published: 04.06.2015
• Subjects: BLASTING; CYLINDERS; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; PISTONS; SEALINGS; THERMAL INSULATION IN GENERAL; WEAPONS

내주 측에 환상의 내주 볼록부를 갖는 밀봉장치이어도, 생산 효율을 높이면서 절단 위치의 정밀도를 높이는 것을 가능하게 하는 밀봉장치의 제조방법 및 슬라이딩성을 높이고 또한 파손의 억제를 도모할 수 있는 밀봉장치를 제공한다. 외주 측에 원통면부(130)와 환상의 외주 볼록부(110)를 교대로 복수 갖추고, 내주 측에 원통면부와 환상의 내주 볼록부를 교대로 복수 갖추며, 또한 이들 외주 측의 원통면부와 내주 측의 원통면부 및 외주 볼록부와 내주 볼록부가 축선 방향에서 같은 위치로 되도록 구비되는 고무모양 탄성체로 만들어진 통모양의 성형체(100a)를 성형하는 공정과, 성형체(100a)에 대해 외주 측의 각 원통면부(130)에 각각 절단을 행하는 공정을 포함하는 것을 특징으로 한다. Provided are: a method for manufacturing a sealing device which makes it possible to improve the positioning accuracy of a parting operation while also improving manufacturing efficiency, even if the sealing device has an annular inner peripheral convex portion on its inner peripheral side, and a sealing device that is capable of achieving a better sliding property and suppressing a breakage thereof. A method includes: conducting a process for molding an elastomeric cylindrical molded body (100a) that is provided with a plurality of cylindrical surface portions (130) and a plurality of annular outer peripheral convex portions (110) arranged alternately on an outer peripheral side thereof, further provided with a plurality of cylindrical surface portions and a plurality of annular inner peripheral convex portions arranged alternately on an inner peripheral side thereof, and the cylindrical surface portions on the outer peripheral side and the cylindrical surface portions on the inner peripheral side, as well as the outer peripheral convex portions and the inner peripheral convex portions are provided so as to be at the same positions in the axial direction; and conducting a process for conducting a parting operation to the molded body (100a) along the individual cylindrical surface portions (130) on the outer peripheral side.